Question

What must be subtracted from x³ – 1 to get 2x³-2y²-1​

Answer 1

let z be subtracted by x^3-1 to get 2x^3-2y^2-1

z- x3-1 = 2x3-2y2-1

z= 2x3-2y2-1+x3-1

Z= 2x3-x3-2y2-1-1

Z= x3-2y2-2

I hope you get it